This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

on the left where the list of mail folders (Inbox, Sent, Spam and the list inside the mail) is very small

  • 3 پاسخ
  • 1 has this problem
  • 13 views
  • آخرین پاسخ توسّط Toad-Hall

more options

Good day. Installed the latest version of thunderbird. on the left where the list of mail folders (Inbox, Sent, Spam and the list inside the mail) is very small. ctrl ++ enlarges the text of letters, but not the left panel and the list of emails. Is it possible to increase the font in this list

Good day. Installed the latest version of thunderbird. on the left where the list of mail folders (Inbox, Sent, Spam and the list inside the mail) is very small. ctrl ++ enlarges the text of letters, but not the left panel and the list of emails. Is it possible to increase the font in this list
Attached screenshots

All Replies (3)

more options

For those using 'Windows OS': If you use the hamburger Menu icon on the 'Mail Toolbar':

  • Menu icon > Options > Options > Advanced > 'General' tab

If you use the top 'Menu Bar' toolbar:

  • Tools > Options > Advanced > 'General' tab
  • click on 'Config Editor' button.

You may see a friendly warning accept the risk.

  • In search type : pixels
  • look for this line: layout.css.devPixelsPerPx

the default value is -1.0

  • double click on that line to open a small window OR right-click the preference and select 'Modify' which allows you to change the 'Value'
  • You can try values such as 1.20 or 1.25 or 1.5
  • click on 'OK'

You will instantly see an increase in font size, so you can modify the overall font size of the user interface to suit whatever you prefer.

more options

I, too, had this problem with Thunderbird 68 and 74. Ctrl++ would not change the Message List font, despite View, Zoom had "Text only" unticked. My solution: use Tools, Developer tools, Developer toolbox, Allow connection. adjust size Exit to Thunderbird.

Warren Crawford

more options

It is much easier to simply alter the provided setting in Config Editor.

Warren Crawford: Using Developer Toolbox will seem very daunting for most people. After allowing connection, you would need to provide very explicit set of instructions on what options to select in order to 'Adjust size' with images as a guide. Perhaps you would be willing to provide this info?